Vehicle lamp

Abstract

The invention provides a vehicle lamp which is not easy to accumulate heat inside and can prevent thermal deformation of a condensing lens and a projection lens. A vehicle lamp (10) is provided with a light source unit (12), a support unit (11), a condenser lens (13), a light shielding member (14), and a projection lens (15). A first space (S1) is formed by the first lens section (41), the first lens peripheral wall section (42), and the light shielding member (light shielding section (51)). A second space (S2) is formed by the second lens section (61), the second lens peripheral wall section (62), and the light shielding member (light shielding section (51)). An upper opening portion (an upper opening portion (42b) in the case of the first lens peripheral wall portion (42) and an upper opening portion (62b) in the case of the second lens peripheral wall portion (62)) is formed in a portion located at the upper portion of at least one of the first lens peripheral wall portion (42) and the second lens peripheral wall portion (62).

Description

Technical Field

[0001] The present invention relates to a vehicle lamp. Background Art

[0002] Considered vehicle lamps are those that create illumination patterns on the road surface surrounding the vehicle. For example, Patent Document 1 describes a vehicle lamp comprising: a light source; a support portion that supports the light source; a condenser lens that focuses light emitted from the light source; a light shielding member provided with an illumination slit that partially transmits the light focused by the condenser lens; a projection lens that projects the light that has passed through the light shielding member to create the illumination pattern; and a housing that houses these components. The housing contains a sealed space.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2020-205237 Summary of the Invention

[0006] Problems to be solved by the invention

[0007] However, vehicle lamps heat up due to heat generated by the light source itself and by the light emitted from the light source, and this heat tends to accumulate inside. In particular, the light shielding component, which is exposed to light over a large area, tends to heat up easily, potentially causing thermal deformation of the surrounding condenser lens and projection lens.

[0008] An object of the present invention is to provide a vehicle lamp that is less likely to accumulate heat inside and can prevent thermal deformation of a condenser lens and a projection lens.

[0009] Solutions to Problems

[0010] To achieve the above-mentioned object, a vehicle lamp according to claim 1 includes: a light source portion; a support portion that supports the light source portion; a condensing lens that condenses light emitted from the light source portion; a light shielding member provided with an illumination slit that partially allows the light condensed by the condensing lens to pass therethrough; and a projection lens that projects the light that has passed through the light shielding member to form an illumination pattern, the condensing lens including a first lens portion and a first lens surrounding wall portion that rises from the first lens portion with the first lens portion as a bottom, the projection lens including a second lens portion and a second lens surrounding wall portion that rises from the second lens portion with the second lens portion as a bottom, a first space being formed by the first lens portion, the first lens surrounding wall portion, and the light shielding member, and a second space being formed by the second lens portion, the second lens surrounding wall portion, and the light shielding member, and an upper opening being formed in a portion located above at least one of the first lens surrounding wall portion and the second lens surrounding wall portion.

[0011] According to a second aspect of the present invention, in the vehicle lamp of the first aspect, a lower opening is formed in a portion below the first lens surrounding wall portion or the second lens surrounding wall portion where the upper opening is formed.

[0012] Scheme 3 of the present invention is a vehicle lamp according to Scheme 1 or Scheme 2, wherein the first lens surrounding wall portion is provided with: a first upper opening portion formed in the upper portion and communicating with the above-mentioned first space; and a first lower opening portion formed in the lower portion and communicating with the above-mentioned first space; and the second lens surrounding wall portion is provided with: a second upper opening portion formed in the upper portion and communicating with the above-mentioned second space; and a second lower opening portion formed in the lower portion and communicating with the above-mentioned second space.

[0013] According to solution 4 of the present invention, according to any one of the vehicle lamps of solutions 1 to 3 above, the support portion has a mounted portion and a heat dissipation portion, the focusing lens has a first lens mounting portion extending from the end portion of the first lens peripheral wall portion along a width direction intersecting the optical axis direction, the shading component has a shading component mounting portion extending along the width direction, and the projection lens has a second lens mounting portion extending from the end portion of the second lens peripheral wall portion along the width direction, and the focusing lens, the shading component and the projection lens are fixed to the mounted portion in an overlapping state in the order of the first lens mounting portion, the shading component mounting portion and the second lens mounting portion.

[0014] A fifth aspect of the present invention provides the vehicle lamp according to any one of the first to fourth aspects, wherein the projection lens is formed of a material different from that of the condenser lens.

[0015] A sixth aspect of the present invention provides the vehicle lamp according to any one of the first to fifth aspects, wherein the condenser lens is made of polycarbonate, and the projection lens is made of acrylic.

[0016] A seventh aspect of the present invention is the vehicle lamp according to any one of the first to sixth aspects, wherein the upper opening is formed in the second lens peripheral wall portion.

[0017] Effects of the Invention

[0018] In the present invention, heat is less likely to accumulate inside, and thermal deformation of the condenser lens and the projection lens can be prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 These are explanatory diagrams showing how the vehicle lamp according to the present embodiment is mounted on a vehicle and forms illumination patterns.

[0020] Figure 2 It is a perspective view showing the structure of a vehicle lamp.

[0021] Figure 3 yes Figure 2 An exploded perspective view of a vehicle lamp is shown.

[0022] Figure 4 yes Figure 2 A front view of a vehicle lamp is shown.

[0023] Figure 5 yes Figure 4 The VV line end view is shown.

[0024] Figure 6 yes Figure 5 , which is an end view of the same position of the vehicle lamp without the first upper opening, the first lower opening, and the second upper opening, and the second lower opening. DETAILED DESCRIPTION

[0025] Hereinafter, the embodiment of the vehicle lamp of the present invention will be described using the accompanying drawings. Figure 1 In the figure, the vehicle lamp 10 is emphasized relative to the vehicle 1 to make it easier to understand how the vehicle lamp 10 is installed, but this does not necessarily correspond to the actual situation.

[0026] like Figure 1As shown, the vehicle lamp 10 of this embodiment is used as a lamp for a vehicle 1 such as an automobile. Unlike the headlights installed on the vehicle 1, it is installed in the front portion of the vehicle 1 to form an illumination pattern Pi on the road surface 2 in front of the vehicle 1. The area in front of the vehicle 1 must include an area closer to the vehicle 1 than the headlight area illuminated by the headlight installed on the vehicle 1, and may also partially include the headlight area. Furthermore, the vehicle lamp 10 may also form the illumination pattern Pi on the road surface 2 in the vicinity of the rear or side of the vehicle 1, and is not limited to the structure of this embodiment.

[0027] In this embodiment, each vehicle lamp 10 is arranged at a position higher than the road surface 2 at the front end of the vehicle 1. The vehicle lamp 10 is oriented with the projection optical axis Lp (see FIG. Figure 3 and Figure 5 The two vehicle lamps 10 are installed on the vehicle 1 in a tilted state relative to the road surface 2 in a manner such as to face the road surface 2. The two vehicle lamps 10 have basically the same structure except for the difference in the installation position and the position where the illumination pattern Pi is formed.

[0028] In the following description, in each vehicle lamp 10, Figures 2 to 5 The optical axis direction (Z), the vertical direction (Y), and the width direction (X) are defined as shown. That is, the optical axis direction (Z) is the direction in which the projection optical axis Lp, which is the direction of the irradiated (projected) light, extends; the vertical direction (Y) is a direction perpendicular to the optical axis direction (Z); and the width direction (X) is a direction perpendicular to the optical axis direction and the vertical direction.

[0029] like Figure 2 and Figure 3 As shown, the vehicle lamp 10 has a light source 12 , a condenser lens 13 , a shade (light shielding member) 14 and a projection lens 15 mounted on a mounting base (support) 11 to form a single projection optical system, constituting a projection-type road surface projection unit.

[0030] The mounting platform 11 is where the light source 12 is mounted. It is formed from thermally conductive aluminum die-casting or resin, and as a whole functions as a heat sink that dissipates heat generated by the light source 12 to the outside. The mounting platform 11 includes a base 21, a plurality of heat sinks (heat dissipation portions) 22, and a pair of mounting arms (mounted portions) 23.

[0031] The base portion 21 is a flat plate orthogonal to the optical axis, and a light source mounting portion 24 is provided in the center. The light source mounting portion 24 specifies the location where the light source portion 12 is mounted. Figure 3 As shown, the flat surface between the pair of mounting arms 23 is provided with a pair of threaded holes 24a and a pair of positioning protrusions 24b. The pair of threaded holes 24a are provided at diagonal positions of the light source mounting portion 24, and can be screwed in by screwing in screws 25 (refer to FIG. Figure 2) and fixed. A pair of positioning protrusions 24b are arranged along the width direction at the light source mounting portion 24, are respectively located near each mounting arm portion 23, and protrude toward the front side in the optical axis direction. Each heat sink 22 is formed into a plate shape orthogonal to the width direction on the rear side of the base portion 21 (the rear side in the optical axis direction (the side opposite to the direction of the irradiated light)). The heat sinks 22 are arranged (side by side) at predetermined intervals in the width direction. The stage portion 11 is provided to dissipate the heat generated by the light source portion 12 provided at the light source mounting portion 24 mainly from each heat sink 22 to the outside.

[0032] A pair of mounting arms 23 are arranged in pairs on both outer sides in the width direction of the light source mounting portion 24, and protrude from the base portion 21 toward the front side in the optical axis direction. The ends 23a of the two mounting arms 23 on the front side in the optical axis direction are formed into planes that are orthogonal to the optical axis direction, and the ends 23a of each other are located at the same position (on the same plane) in the optical axis direction. A positioning protrusion 23b and a threaded hole 23c are provided at each end 23a. The positioning protrusion 23b is provided at the lower part of the end 23a in the vertical direction and protrudes toward the front side in the optical axis direction. The threaded hole 23c is provided at the upper part of the end 23a in the vertical direction, and can be used to fix the focusing lens 13, the light shield 14, and the projection lens 15 by screwing in the screw 26.

[0033] The light source unit 12 includes a first light source 31, a second light source 32, a connector terminal (not shown), and a substrate 33 on which the first light source 31, the second light source 32, and the connector terminal are mounted. The first light source 31 and the second light source 32 are composed of light-emitting elements such as LEDs (Light Emitting Diodes). In the present embodiment, the first light source 31 and the second light source 32 emit amber light (amber light) according to a Lambertian distribution centered on the emission optical axis. In addition, the first light source 31 and the second light source 32 can be configured to appropriately set the color (wavelength band), distribution method, number of light sources, etc., and are not limited to the structure of the present embodiment.

[0034] The connector terminals (not shown) are electrically connected to the wiring pattern of the substrate 33 and are detachably connected to the connection connector of the lighting control circuit. By attaching the connection connector to the connector terminals, power can be supplied from the lighting control circuit to each light source 31, 32 via the wiring pattern.

[0035] The substrate 33 is a plate-shaped aluminum substrate, and mounts the first and second light sources 31 and 32. Screw holes 33a are provided on the substrate 33 at diagonal positions corresponding to the pair of threaded holes 24a in the light source mounting portion 24 of the base 21 of the mounting platform 11. Furthermore, a pair of positioning holes 33b are provided corresponding to the pair of positioning protrusions 24b in the light source mounting portion 24. The substrate 33 is mounted to the light source mounting portion 24 by screwing screws 25, which have passed through the corresponding pair of screw holes 33a, into the corresponding threaded holes 24a while passing through the corresponding positioning protrusions 24b. This allows the substrate 33 to be mounted on the light source mounting portion 24, and thus the first and second light sources 31 and 32 mounted therein, opposite the condenser lens 13. Power is supplied to the substrate 33 from the lighting control circuit via connector terminals, illuminating the first and second light sources 31 and 32. Alternatively, the substrate 33 can be formed from a glass epoxy substrate.

[0036] The condenser lens 13 condenses the light emitted from the first light source 31 and the second light source 32, focusing the light onto the periphery of each slit portion 54 (described later) on the light shield 14, that is, the area on the light shield 14 that includes all of the slit portions 54 and where each slit portion 54 is provided. In this embodiment, the condenser lens 13 is made of polycarbonate.

[0037] The condenser lens 13 includes a first lens portion 41, a first lens surrounding wall portion 42, and a first lens mounting portion 43. The first lens portion 41 is a portion whose center is positioned on the projection optical axis Lp when the condenser lens 13 is in the installed state, and primarily focuses light emitted from the first light source 31 and the second light source 32. The first lens surrounding wall portion 42 is a portion that rises from the first lens portion 41, with the first lens portion 41 as its base. The first lens mounting portion 43 extends in the width direction from the end portion 42a of the first lens surrounding wall portion 42 and includes a pair of first lens mounting pieces 43a.

[0038] The two first lens mounting pieces 43a are formed into a plate shape perpendicular to the optical axis and can be arranged to overlap with the end portions 23a of the two mounting arms 23 of the base portion 21 of the mounting platform 11. Each first lens mounting piece 43a is provided with a first lens positioning hole 43b and a first lens screw through hole 43c. Each first lens positioning hole 43b can have its positioning protrusion 23b inserted when the first lens mounting piece 43a overlaps with the end portion 23a. Each first lens screw through hole 43c can have a screw 26 screwed into its threaded hole 23c inserted therethrough when the first lens mounting piece 43a overlaps with the end portion 23a. By inserting the positioning protrusion 23b corresponding to each first lens positioning hole 43b and screwing each screw 26 that has passed through each first lens screw through hole 43c into the corresponding threaded hole 23c, the focusing lens 13 is mounted on the two mounting arms 23 (end portions 23a) of the mounting platform 11.

[0039] A pair of substantially rectangular cutouts 42 b and 42 c are formed at the end 42 a of the first lens peripheral wall 42 at positions where the pair of first lens mounting pieces 43 a are not formed and at upper and lower positions when the condenser lens 13 is installed.

[0040] The light shield 14 is an example of a light shielding member that forms the irradiation pattern Pi by partially passing the light from the first light source 31 and the second light source 32 focused by the condenser lens 13 through the irradiation slit 53. Figure 1 As shown, the illumination pattern Pi comprises three illumination patterns Di arranged at approximately equal intervals in a direction away from the vehicle 1. When illustrating each illumination pattern Di individually, the illumination pattern Di farthest from the vehicle 1 is designated as the first illumination pattern Di1. From this first illumination pattern Di1, the second illumination pattern Di2 and the third illumination pattern Di3 are designated as they approach the vehicle 1. In this embodiment, the first through third illumination patterns Di1 to Di3 are each V-shaped marker and are arranged on the same straight line away from the vehicle 1. From the vehicle 1, they appear as arrows indicating the direction Da.

[0041] like Figure 3 As shown, the hood 14 is basically formed of a plate-shaped member that blocks light transmission, and includes a hood portion 51 and a pair of hood mounting pieces 52. The hood mounting pieces 52 protrude from the hood portion 51 on both sides in the width direction and are arranged so as to overlap with the first lens mounting pieces 43a of the condenser lens 13 mounted on the ends 23a of the two mounting arms 23 of the mounting platform 11. Each hood mounting piece 52 is provided with a hood positioning hole 52a and a hood screw through hole 52b.

[0042] Each hood positioning hole 52a allows the positioning protrusion 23b, which has passed through the first lens mounting piece 43a, to be inserted into the hood mounting piece 52 while overlapping the first lens mounting piece 43a. Each hood screw through hole 52b allows the screw 26, which has passed through the first lens screw through hole 43c, to be inserted into the hood mounting piece 52 while overlapping the first lens mounting piece 43a. By inserting the positioning protrusion 23b corresponding to each hood positioning hole 52a and screwing the screw 26, which has passed through each hood screw through hole 52b, into the corresponding threaded hole 23c, the hood 14 is attached to the two mounting arms 23 of the installation platform 11 via the condenser lens 13. By attaching the hood mounting piece 52 to the two mounting arms 23, the hood 14 is positioned so that the center of the hood portion 51 is aligned with the projection optical axis Lp.

[0043] The light shielding cover 14 is fixed to the condenser lens 13 , thereby forming a first space S1 surrounded by the first lens portion 41 , the first lens peripheral wall portion 42 , and the light shielding cover portion 51 .

[0044] The pair of cutouts 42b and 42c function as openings communicating with the first space S1. When the condenser lens 13 is installed, the upper cutout 42b serves as a first upper opening 42b, and the lower cutout 42c serves as a first lower opening 42c.

[0045] The light shielding cover 51 is provided with an illumination slit 53 formed by partially cutting through a plate-like member. The illumination slit 53 partially passes the light from the first light source 31 and the second light source 32 that has been focused by the focusing lens 13 (mainly the first lens unit 41), thereby forming the projected illumination pattern Pi into a predetermined shape. The illumination slit 53 corresponds to the illumination pattern Pi, as shown in FIG. Figure 3 As shown, in this embodiment, three slit portions 54 are included.

[0046] The three slits 54 correspond to the three irradiation patterns Di in a one-to-one manner. The projection lens 15 reverses the light shield 14 (irradiation slits 53) and projects the light onto the road surface 2. Therefore, the positional relationship of the slits 54 with respect to the irradiation patterns Di of the irradiation pattern Pi is a rotationally symmetrical positional relationship with the projection optical axis Lp as the center (refer to FIG. Figure 3 ). Therefore, in each slit portion 54, the first slit portion 541 at the bottom in the vertical direction corresponds to the first irradiation pattern Di1 of the irradiation pattern Pi, the second slit portion 542 above it corresponds to the second irradiation pattern Di2, and the third slit portion 543 above it corresponds to the third irradiation pattern Di3. The sizes and intervals of the three slit portions 54 are set according to the distance from the road surface 2, so that each irradiation pattern Di on the road surface 2 is as described above. Figure 1 The sizes shown are approximately equally spaced.

[0047] The projection lens 15 projects the light having passed through the light shielding cover 14 onto the road surface 2. In this embodiment, the projection lens 15 is made of acrylic.

[0048] The projection lens 15 includes a second lens portion 61, a second lens surrounding wall portion 62, and a second lens mounting portion 63. The second lens portion 61 is a portion whose center is positioned on the projection optical axis Lp when the projection lens 15 is installed, and primarily projects light emitted from the first and second light sources 31 and 32. The second lens surrounding wall portion 62 is a portion that rises from the second lens portion 61, with the second lens portion 61 as its base. The second lens mounting portion 63 extends in the width direction from an end portion 62a of the second lens surrounding wall portion 62 and includes a pair of second lens mounting tabs 63a.

[0049] The two second lens mounting pieces 63a are formed into a plate-like shape perpendicular to the optical axis and can be arranged to overlap with the respective hood mounting pieces 52 of the hood 14, which is mounted on the ends 23a of the two mounting arms 23 of the base 21 of the mounting platform 11. Each second lens mounting piece 63a is provided with a second lens positioning hole 63b and a second lens screw through hole 63c. Each second lens positioning hole 63b allows the positioning protrusion 23b that has passed through the hood mounting piece 52 to be inserted when the second lens mounting piece 63a overlaps the hood mounting piece 52. Each second lens screw through hole 63c allows the screw 26 that has passed through the hood screw through hole 52b of the second lens mounting piece 63a to be inserted when the second lens mounting piece 63a overlaps the hood mounting piece 52. The projection lens 15 is mounted on the two mounting arms 23 (ends 23a thereof) of the mounting base 11 by inserting the positioning protrusions 23b corresponding to the second lens positioning holes 63b and screwing the screws 26 passing through the second lens screw through holes 63c into the corresponding threaded holes 23c. This allows the projection lens 15 to be positioned so that the optical axis of the second lens portion 61, i.e., the projection optical axis Lp, faces a predetermined direction, thereby setting the direction of the projection optical axis Lp of the vehicle lamp 10.

[0050] The projection lens 15 is fixed to the light shielding mask 14 , thereby forming a second space S2 surrounded by the second lens portion 61 , the second lens peripheral wall portion 62 , and the light shielding mask portion 51 .

[0051] A pair of generally rectangular cutouts 62b and 62c are formed at the end 62a of the second lens peripheral wall portion 62, at positions above and below the projection lens 15 when the projection lens 15 is installed, where the pair of second lens mounting pieces 63a are not formed. The pair of cutouts 62b and 62c function as openings communicating with the second space S2. When the projection lens 15 is installed, the upper cutout 62b serves as the second upper opening 62b, and the lower cutout 62c serves as the second lower opening 62c.

[0052] Figure 4 yes Figure 2 The front view of the vehicle lamp shown, Figure 5 yes Figure 4 The VV line end view shown. In addition, Figure 6 yes Figure 5 The comparative example is an end view of the same position of the vehicle lamp without forming the first upper opening, the first lower opening, the second upper opening, and the second lower opening. Figure 6 In, with Figure 5 The same parts as shown in the figures are marked with "'". Figure 5 and Figure 6 In FIG, the flow of air in the space is shown as arrows AF.

[0053] When the light sources (first light source 31 and second light source 32) are illuminated by the lighting control circuit, light is emitted from the light sources. Heat generated by the light sources themselves and the emitted light raise the surrounding temperature. In particular, the light shield 14, which is exposed to light over a large area, experiences a temperature increase, which in turn raises the temperature of the surrounding air in the first and second spaces S1 and S2.

[0054] like Figure 6 As shown, in the case of the vehicle lamp 10' without the first upper and lower openings, as well as the second upper and second lower openings, the heated air in the first space S1 and the second space S2 accumulates therein, raising the temperature of the surrounding condenser lens 13' and projection lens 15'. This may cause thermal deformation of the condenser lens 13' and projection lens 15'.

[0055] On the other hand, in the case of the vehicle lamp 10 of this embodiment, as shown in FIG. Figure 5 As shown, the first space S1 communicates with the outside through the first upper opening 42b and the first lower opening 42c. Therefore, when the air in the first space S1 is heated and convection occurs, outside air enters the first space S1 through the first lower opening 42c and is exhausted through the first upper opening 42b. Similarly, the second space S2 communicates with the outside through the second upper opening 62b and the second lower opening 62c. Therefore, when the air in the second space S2 is heated and convection occurs, outside air enters the second space S2 through the second lower opening 62c and is exhausted through the second upper opening 62b. This suppresses temperature increases in the first and second spaces S1 and S2, and prevents thermal deformation of the condenser lens 13 and the projection lens 15.

[0056] Next, the operation of the vehicle lamp 10 will be described.

[0057] The vehicle lamp 10 comprises: a light source portion 12; a support portion (a mounting base portion) 11, which supports the light source portion 12; a focusing lens 13, which focuses the light emitted from the light source portion 12; a light shielding member (light shield) 14, which is provided with an illumination slit 53 for partially passing the light focused by the focusing lens 13; and a projection lens 15, which projects the light passing through the light shielding member 14 to form an illumination pattern Pi, the focusing lens 13 having a first lens portion 41 and a first lens peripheral wall portion 42 that rises from the first lens portion 41 with the first lens portion 41 as the bottom, and the projection lens 15 having a second lens portion 61 and a second lens wall portion 62 which is upright from the second lens portion 61 and has the second lens portion 61 as the bottom, a first space S1 is formed by the first lens portion 41, the first lens wall portion 42 and the light-shielding component 14, and a second space S2 is formed by the second lens portion 61, the second lens wall portion 62 and the light-shielding component 14, and an upper opening portion is formed in a portion located above at least one of the first lens wall portion 42 and the second lens wall portion 62 (a first upper opening portion 42b in the case of the first lens wall portion 42, and a second upper opening portion 62b in the case of the second lens wall portion 62).

[0058] The heated air in the space (first space S1 or second space S2) is discharged to the outside of the space from the upper opening (first upper opening 42b or second upper opening 62b), so heat is not easily accumulated inside, which can prevent thermal deformation of the focusing lens 13 and the projection lens 15.

[0059] Alternatively, a lower opening (a first lower opening 42c in the case of the first lens surrounding wall 42 or a second lower opening 62c in the case of the second lens surrounding wall 62) may be formed in a portion located below the first lens surrounding wall 42 or the second lens surrounding wall 62 where the upper opening is formed. When the lower opening is formed as a pair with the upper opening, the heated air in the space can be discharged more smoothly from the upper opening to the outside of the space.

[0060] Alternatively, the first lens surrounding wall portion 42 may include a first upper opening 42b formed in the upper portion and communicating with the first space S1, and a first lower opening 42c formed in the lower portion and communicating with the first space S1. Alternatively, the second lens surrounding wall portion 62 may include a second upper opening 62b formed in the upper portion and communicating with the second space S2, and a second lower opening 62c formed in the lower portion and communicating with the second space S2. With this configuration, the heated air within the first space S1 is smoothly discharged to the outside through the first upper opening 42b and the first lower opening 42c. Furthermore, the heated air within the second space S2 is smoothly discharged to the outside through the second upper opening 62b and the second lower opening 62c.

[0061] It can also be that the support portion 11 has a mounted portion (a pair of mounting arm portions) 23 and a heat dissipation portion (a plurality of heat sinks) 22, the focusing lens 13 has a first lens mounting portion 43 extending from the end portion 42a of the first lens peripheral wall portion 42 along a width direction intersecting the optical axis direction, the shading component 14 has a shading component mounting portion (light shield mounting piece portion) 52 extending along the width direction, the projection lens 15 has a second lens mounting portion 63 extending from the end portion 62a of the second lens peripheral wall portion 62 along the width direction, and the focusing lens 13, the light shielding component 14 and the projection lens 15 are fixed to the mounted portion 23 in a state of overlapping in the order of the first lens mounting portion 43, the light shielding component mounting portion 52 and the second lens mounting portion 63.

[0062] The focusing lens 13 and the projection lens 15 can be formed of any transparent material that allows light to pass through. As raw materials, polycarbonate and acrylic can be considered, for example. The focusing lens 13 and the projection lens 15 can be formed of the same material or different materials. In the case of being formed of different materials, for example, the focusing lens 13 can be made of polycarbonate for its heat resistance, and the projection lens 15 can be made of acrylic for its transparency. In this case, acrylic is more susceptible to thermal deformation than polycarbonate. Therefore, when it is necessary to select the formation position of the upper opening portion, it is better to form it preferentially on the second lens peripheral wall portion 62.

[0063] While the embodiments of the present invention have been specifically described above, the present invention is not limited to these embodiments and can, of course, be modified within the scope of the technical concept of the present invention.

[0064] For example, in the above embodiment, four openings are formed, namely the first upper opening 42b, the first lower opening 42c, the second upper opening 62b, and the second lower opening 62c. However, as described in the above-mentioned operation, it is sufficient to form an opening in at least the portion located above at least one of the first lens surrounding wall 42 and the second lens surrounding wall 62. Therefore, for example, it is also possible to form only the first upper opening 42b or the second upper opening 62b, or only the first upper opening 42b and the first lower opening 42c, or only the first upper opening 42b and the second upper opening 62b, or only the first upper opening 42b, the first lower opening 42c, and the second upper opening 62b.

[0065] In addition, in the above embodiment, the first upper opening portion 42b and the first lower opening portion 42c and the second upper opening portion 62b and the second lower opening portion 62c are formed by incisions, but as long as they are openings that are connected to the space (the first space S1 and the second space S2), it is of course possible to form openings through through holes in the first lens surrounding wall portion 42 or the second lens surrounding wall portion 62.

[0066] Explanation of symbols

[0067] 10—vehicle lamp, 11—setting table, 12—light source, 13—condensing lens, 41—first lens portion, 42—first lens peripheral wall portion, 42a—end portion, 42b—first upper opening portion (cut-out portion), 42c—first lower opening portion (cut-out portion), 43—first lens mounting portion, 14—light shield (light shielding component), 15—projection lens, 61—second lens portion, 62—second lens peripheral wall portion, 62a—end portion, 62b—second upper opening portion (cut-out portion), 62c—second lower opening portion (cut-out portion), 63—second lens mounting portion, S1—first space, S2—second space.

Claims

1. A vehicle lamp, characterized in that: have: Light source department; a supporting portion, which supports the light source portion; a condenser lens for condensing the light emitted from the light source; a light shielding member provided with an illumination slit for partially passing the light focused by the focusing lens; and a projection lens that projects the light that has passed through the light-shielding member to form an illumination pattern, The condenser lens includes a first lens portion and a first lens peripheral wall portion that is formed with the first lens portion as a bottom and rises from the first lens portion. The projection lens includes a second lens portion and a second lens peripheral wall portion that is formed with the second lens portion as a bottom and rises from the second lens portion. A first space is formed by the first lens portion, the first lens surrounding wall portion, and the light shielding member. A second space is formed by the second lens portion, the second lens peripheral wall portion, and the light shielding member. An upper opening is formed in a portion located above at least one of the first lens surrounding wall portion and the second lens surrounding wall portion.

2. The vehicle lamp according to claim 1, wherein: A lower opening is formed in a portion located below the first lens surrounding wall portion or the second lens surrounding wall portion where the upper opening is formed.

3. The vehicle lamp according to claim 1, wherein: The first lens peripheral wall portion is formed with: a first upper opening formed in an upper portion and communicating with the first space; and a first lower opening formed in a lower portion and communicating with the first space. The second lens peripheral wall portion includes: a second upper opening formed in an upper portion and communicating with the second space; and a second lower opening formed in a lower portion and communicating with the second space.

4. The vehicle lamp according to claim 1, wherein: The supporting portion has a mounted portion and a heat dissipation portion. The condenser lens has a first lens mounting portion extending from an end portion of the first lens peripheral wall portion in a width direction intersecting the optical axis direction. The light shielding member has a light shielding member mounting portion extending along the width direction. The projection lens has a second lens mounting portion extending from an end portion of the second lens peripheral wall portion in the width direction. The condenser lens, the light shielding member, and the projection lens are fixed to the mounted portion in a state where they overlap in the order of the first lens mounting portion, the light shielding member mounting portion, and the second lens mounting portion.

5. The vehicle lamp according to claim 1, wherein: The projection lens is formed of a material different from that of the condenser lens.

6. The vehicle lamp according to claim 5, characterized in that: The above-mentioned focusing lens is made of polycarbonate. The projection lens is made of acrylic.

7. The vehicle lamp according to claim 6, characterized in that: The upper opening is formed in the second lens peripheral wall.

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